Java ByteBuffer Write writeColorTable(ByteBuffer out, int numColors)

Description

write Color Table

License

Open Source License

Declaration

public static void writeColorTable(ByteBuffer out, int numColors) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.nio.ByteBuffer;

public class Main {
    public static void writeColorTable(ByteBuffer out, int numColors) {
        verifyRemaining(out, getColorTableLength(numColors));
        for (int i = 0; i < numColors; i++) {
            out.put((byte) (0xFF0000 & i));
            out.put((byte) (0x00FF00 & i));
            out.put((byte) (0x0000FF & i));
        }//from   w  ww .  j  a  va  2  s . c om
    }

    private static void verifyRemaining(ByteBuffer buffer, int expected) {
        if (buffer.remaining() < expected) {
            throw new IllegalArgumentException("Must have at least "
                    + expected + " bytes to write");
        }
    }

    public static int getColorTableLength(int numColors) {
        return 3 * numColors;
    }
}

Related

1. writeBytesNoLength(ByteBuffer logBuf, byte[] b)
2. writeByteString(ByteBuffer byteBuffer, String value)
3. writeCDouble(ByteBuffer buffer, double value)
4. writeCharacterString(ByteBuffer buf, byte[] bytes)
5. writeCInt(ByteBuffer buffer, int anInt)
6. writeDouble(ByteBuffer buffer, double d)
7. writeDouble(double v, ByteBuffer buffer)
8. writeEmpty(final ByteBuffer buffer, final int type)
9. writeFakeImageData(ByteBuffer out, int lzwMinCodeSize)